Supplemental air pressure providing device adapted for use with an inflating module for inflating an inflatable object

Abstract

A supplemental air pressure providing device adapted for use with an inflatable object includes an oscillator responsible for generating magnetic field and vibrating a casing, an air compressing device responsible for compressing air and noise silencer mounted inside the air compressing device for reducing noise generated while compressed air flows through the air compressing device for inflating the inflatable object.

What is claimed is: 
     
       1. A supplemental air pressure providing device adapted for use with an inflatable object, the supplemental air pressure providing device comprising:
 an outer housing having a first inlet for receiving ambient air; 
 an inner housing located inside the outer housing and comprising:
 a second inlet for receiving air via the first inlet; 
 means for compressing air comprising a chamber having an inlet valve and an outlet valve; and 
 a noise silencing room; 
 
 a cushion provided between the inner housing and the outer housing for minimizing vibration between the inner housing and the outer housing; 
 a discharge valve with a third inlet communicating between the chamber and the noise silencing room, wherein the valve allows air to flow from the chamber to the noise silencing room, but prevents air from flowing from the noise silencing room to the chamber. 
 
     
     
       2. The supplemental air pressure providing device as claimed in  claim 1 , wherein the chamber comprises a casing, and wherein the means for compressing air further includes:
 magnets securely mounted on one end of the casing; 
 an oscillator generating magnetic field to drive the magnets to vibrate such that the casing is also vibrated; 
 a cap securely engaged with the casing so as to move with the casing when the magnets are influenced by the magnetic field; and 
 check valves provided inside the cap to prevent air from reverse movement. 
 
     
     
       3. The supplemental air pressure providing device as claimed in  claim 2 , wherein a silencer is mounted inside the chamber for reducing noise generated from air flow. 
     
     
       4. The supplemental air pressure providing device as claimed in  claim 2 , wherein the cushion is provided between the outer housing and the noise silencing room. 
     
     
       5. The supplemental air pressure providing device as claimed in  3 , wherein the silencer is made of cotton for reducing noise. 
     
     
       6. The supplemental air pressure providing device as claimed in  4 , wherein the noise silencing room has therein absorbent to absorb noise. 
     
     
       7. The supplemental air pressure providing device as claimed in  claim 1 , further comprising a noise silencer mounted inside the air compressing means for reducing noise generated while compressed air flows through the air compressing means for inflating the inflatable object. 
     
     
       8. The supplemental air pressure providing device as claimed in  claim 1 , wherein the means for compressing air is configured to activate when pressure is below a predetermined level so as to maintain air pressure in the inflatable object. 
     
     
       9. The supplemental air pressure providing device as claimed in  claim 1 , wherein structures of the valve and the noise silencing room are configured such that a gap is generated when the air is flowing from the chamber to the noise silencing room, and the gap is closed when air is flowing from the noise silencing room to the chamber. 
     
     
       10. The supplemental air pressure providing device as claimed in  claim 1 , further comprising a unidirectional cap mounted outside the valve and having an outlet communicating with an interior of the inflatable body.